-    """Information Extractor for xHamster"""
-    _VALID_URL = r'(?:http://)?(?:www\.)?xhamster\.com/movies/(?P<id>[0-9]+)/(?P<seo>.+?)\.html(?:\?.*)?'
-    _TESTS = [{
-        'url': 'http://xhamster.com/movies/1509445/femaleagent_shy_beauty_takes_the_bait.html',
-        'file': '1509445.mp4',
-        'md5': '8281348b8d3c53d39fffb377d24eac4e',
-        'info_dict': {
-            "upload_date": "20121014",
-            "uploader_id": "Ruseful2011",
-            "title": "FemaleAgent Shy beauty takes the bait",
-            "age_limit": 18,
-        }
-    },
-    {
-        'url': 'http://xhamster.com/movies/2221348/britney_spears_sexy_booty.html?hd',
-        'file': '2221348.flv',
-        'md5': 'e767b9475de189320f691f49c679c4c7',
-        'info_dict': {
-            "upload_date": "20130914",
-            "uploader_id": "jojo747400",
-            "title": "Britney Spears  Sexy Booty",
-            "age_limit": 18,
-        }
-    }]
-
-    def _real_extract(self,url):
-        def extract_video_url(webpage):
-            mobj = re.search(r'\'srv\': \'(?P<server>[^\']*)\',\s*\'file\': \'(?P<file>[^\']+)\',', webpage)
-            if mobj is None:
-                raise ExtractorError('Unable to extract media URL')
-            if len(mobj.group('server')) == 0:
-                return compat_urllib_parse.unquote(mobj.group('file'))
-            else:
-                return mobj.group('server')+'/key='+mobj.group('file')
-
-        def extract_mp4_video_url(webpage):
-            mp4 = re.search(r'<a href=\"(.+?)\" class=\"mp4Play\"',webpage)
-            if mp4 is None:
-                return None
-            else:
-                return mp4.group(1)
+    _VALID_URL = r'(?P<proto>https?)://(?:.+?\.)?xhamster\.com/movies/(?P<id>[0-9]+)/(?P<seo>.+?)\.html(?:\?.*)?'
+    _TESTS = [
+        {
+            'url': 'http://xhamster.com/movies/1509445/femaleagent_shy_beauty_takes_the_bait.html',
+            'info_dict': {
+                'id': '1509445',
+                'ext': 'mp4',
+                'title': 'FemaleAgent Shy beauty takes the bait',
+                'upload_date': '20121014',
+                'uploader': 'Ruseful2011',
+                'duration': 893,
+                'age_limit': 18,
+            }
+        },
+        {
+            'url': 'http://xhamster.com/movies/2221348/britney_spears_sexy_booty.html?hd',
+            'info_dict': {
+                'id': '2221348',
+                'ext': 'mp4',
+                'title': 'Britney Spears  Sexy Booty',
+                'upload_date': '20130914',
+                'uploader': 'jojo747400',
+                'duration': 200,
+                'age_limit': 18,
+            }
+        },
+        {
+            'url': 'https://xhamster.com/movies/2272726/amber_slayed_by_the_knight.html',
+            'only_matching': True,
+        },
+    ]
+
+    def _real_extract(self, url):
+        def extract_video_url(webpage, name):
+            return self._search_regex(
+                [r'''file\s*:\s*(?P<q>["'])(?P<mp4>.+?)(?P=q)''',
+                 r'''<a\s+href=(?P<q>["'])(?P<mp4>.+?)(?P=q)\s+class=["']mp4Thumb''',
+                 r'''<video[^>]+file=(?P<q>["'])(?P<mp4>.+?)(?P=q)[^>]*>'''],
+                webpage, name, group='mp4')